Morning Report for April 1, 2005
Headquarters Daily Report
Part 21 2005-0012 - Cutler-Hammer Freedom Series Model C306 Thermal Overload Relays
| Licensee/Facility: |
| Notification: |
MR Number: H-2005-0011
Source Document: Letter
Reviewer: Vern Hodge
Part 21 2005-0012-00 - Cutler-Hammer Freedom Series Model C306 Thermal Overload Relays
Framatome ANP, a supplier of electrical products for nuclear power plants, reported tripping problems with Cutler-Hammer Freedom Series Model C306 Thermal Overload Relays and Heater Packs. At Vogtle, these components are used in some applications as containment penetration conductor primary protection. It is necessary in such applications that all three phases trip properly. During pre-installation testing of several thermal overload relays with different model heater packs, instances were found where single and multiple overload relay phases would trip either early, late, or not at all.
The licensee is continuing work with Framatome to evaluate the deviation to fully characterize the issue. They are currently reviewing the Vogtle pre-installation testing program for these components to determine if a manufacturing defect exists. This evaluation is expected to be completed by April 29, 2005.
|Accession No ||Accession Date |
|ML050630275 ||03/02/2005 |
|Name ||Office Abbrev ||Phone No ||E-Mail |
|HODGE, VERNON ||NRR ||(301) 415-1861 ||CVH@nrc.gov |
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